package com.xy.xymall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.xy.common.constant.ProductConstant;
import com.xy.xymall.product.dao.AttrAttrgroupRelationDao;
import com.xy.xymall.product.dao.AttrGroupDao;
import com.xy.xymall.product.dao.CategoryDao;
import com.xy.xymall.product.entity.AttrAttrgroupRelationEntity;
import com.xy.xymall.product.entity.AttrGroupEntity;
import com.xy.xymall.product.entity.CategoryEntity;
import com.xy.xymall.product.vo.AttrRespVo;
import com.xy.xymall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xy.common.utils.PageUtils;
import com.xy.common.utils.Query;

import com.xy.xymall.product.dao.AttrDao;
import com.xy.xymall.product.entity.AttrEntity;
import com.xy.xymall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.w3c.dom.Attr;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        //保存基本数据
        this.save(attrEntity);
        //判断是不是是规格参数
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
            //保存关联关系
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }

    }

    /**
     * 根据入参类型查询规格参数或者销售属性,包含模糊查询
     *
     * @param params    查询条件
     * @param catelogId 分类id
     * @param attrType  查询类型，规格参数或者销售属性
     * @return
     */
    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().
                eq("attr_type", "base".equals(attrType) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);
        PageUtils pageUtils = new PageUtils(page);
        //获取所有记录
        List<AttrEntity> records = page.getRecords();
        //遍历每一条记录，并改写成VO进行返回
        List<AttrRespVo> attrRespVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //1、设置分组的名字
            //通过属性id获取到分组与分类中间表的信息
            if ("base".equalsIgnoreCase(attrType)) {
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(
                        new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() != null) {
                    //中间表有分组id
                    Long attrGroupId = attrId.getAttrGroupId();
                    //根据分组id找到分组的完整信息
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrGroupId);
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            //2、设置分类名字
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(attrRespVos);
        return pageUtils;
    }

    /**
     * 查询规格参数详细信息
     * Cacheable设置缓存区域，缓存key为attrinfo加上第一个参数attrId
     * @param attrId
     * @return
     */
    @Cacheable(value = "attr",key = "'attrinfo:'+#root.args[0]")
    @Override
    public AttrRespVo getAttrInfo(Long attrId, Long[] catelogPath) {
        AttrRespVo attrRespVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, attrRespVo);
        //从中间表中找到attrId对应的attrGroupId
        //设置分组信息
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(
                    new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (relationEntity != null) {
                attrRespVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity != null) {
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }
        //设置分类信息
        attrRespVo.setCatelogPath(catelogPath);

        Long catelogId = attrEntity.getCatelogId();
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            attrRespVo.setCatelogName(categoryEntity.getName());
        }
        return attrRespVo;
    }

    /**
     * 修改规格参数详细信息
     *
     * @param attr
     */
    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        //更新基本信息
        this.updateById(attrEntity);
        //修改分组关联
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            Integer count = relationDao.selectCount(
                    new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            //判断是新增还是修改，分组信息没填就是新增
            if (count > 0) {
                relationDao.update(relationEntity,
                        new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            } else {
                relationDao.insert(relationEntity);
            }
        }

    }

    /**
     * 根据分组id查找关联的所有基本属性（规格参数）
     *
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;
    }

    /**
     * 获取当前分组没有关联的所有属性
     *
     * @param attrgroupId
     * @param params
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(String attrgroupId, Map<String, Object> params) {
        //1、当前分组只能关联自己所有的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1、当前分类下其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id", catelogId));
        //2.2、这些分组关联的属性
        //找出这些分组的id
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        //根据分组id找出所有该分组的关联信息
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                .in("attr_group_id", collect));
        //根据分组找出属性id
        List<Long> attrIds = entities.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        //2.3、从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId)
                .eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0) {
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }

    /**
     * 根据所有id找出所有能够被检索的属性的id
     *
     * @param attrIds
     * @return
     */
    @Override
    public List<Long> selectSearchAttrs(List<Long> attrIds) {
        return baseMapper.selectSearchAttrs(attrIds);
    }


}